<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>

</body>
<script src="./itcast.js"></script>
<script>
    var arr = [1,2,3,4,5,6];
    I.each(arr,function(k,v){
        console.log(v);
    });



</script>
</html>